Device for recording the warp of railway tracks



April 25, 1933. A MAUZIN 1,906,170

DEVICE FOR RECORDING THE WARP OF RAILWAY TRACKS Filed March 17, 1952 5 Sheets-Sheet 1 Fig.1 l Fig.5 1 2 IB LI: a a

livid A. E. MAUZIN April 25, 1933.

DEVICE FOR RECORDING THE WARP 0F RAILWAY TRACKS 3 Sheets-Sheet 2 Filed March 17 1932 April 25, 1933.

A.. E. MAUZIN Filed March 17 1952 3 Sheets-Sheet 5 1 2:17-18 L11 9 fi 1s m 15 x 0/ 15 2o n 21 16 1 1 Y 1 [MK/V706: flnabw' frneszf flzzgg-z n B) MM HTTOR/Vfy Patented Apr. 25, 1933 UNITED STATES ANDRE ERNEST MAUZIN, or PARIS, FRANCE DEVICE FOR RECORDING THE Application filed March 17, 1932, Serial No.

This invention relates to a device for measuring the warp of railway tracks.

One constructional form of such a device r is shown by way of example in the accompanying drawings wherein:

Figure 1 is a diagram which is shown in order to define the warp of a track.

Figure 2 is a view of the entire device.

scale.

Figure 5 is a diagrammatic view of a device for automatically projecting a jet of paint on the track when the warp exceeds a certain limit.

If four points on the track are considered, two on each rail (see Figure 1) three of these points define a plane, and the distance of the fourth point from this plane is what is called the warp of the track.

Theoretically, in order to measure a warp it is sufficient to join the points in pairs diagonally and to measure the variation of the vertical distance between the centres of these diagonals.

According to the invention, the problem has been solved practically in the following manner:

The four points between which the warp of the track is measured are fixed by the points of contact of the four wheels of a bogie on the rails (see Figure 2). These wheels have cylindrical tires.

The axles are extended at their ends by rods 5, 6, 7 and 8 which are rigidly fixed to them. These rods carry ball-bearings 9, 10, 11 and 12 which are the starting points of two cables and 46 joining the ends of these axles diagonally. Two carriages 13 and 14 sliding vertically in guides fixed to the roof of the wagon stretch the cable upwardly by means of springs 44. The two carriages are identical and they are guided by four pulleys 15,16, 17, 18 situated in the same vertical plane and running along rods 19 and 20. The said carriages each carry a pulley 21 round which is wound the cable or, preferably, a connected chain which may be substituted therefor.

The warp is given by the variation in dis tance between these two carriages, and is Figures 3 and 4 are detail views on a larger WARP 0F RAILWAY TRACKS 599,544, and in France January 18, 1932.

stylograph 26 and records the warp on paper moving at a speed of either 1 metre per kilometre or 0.10 metre per kilometre travelled by the'wagon.

An additional precaution has been taken. A bush 29 is adapted to slide laterally on the ball-bearings 9, 10,11, 12 mounted on the rods 5, 6', 7 and 8 fixed on the end of the axle, and remains at a fixed distance relatively to the bogie frame, due to guides 32, 33, 34 fixed to the bogie frame, such that the four points of attachment of the cables 47, 48, 49, 50 remain each at the apex of one and the same rectangle.

WVhen the warp exceeds the tolerance limit, a device automatically projects paint on to the track. To obtain this result, the stylograph recording the warp carries a small contact 35. When the warp exceeds the tolerance limit, it contacts a plate 36 which puts an electro-magnet 37 into circuit. This electro-magnet raises a catch 38 and allows a disc 39 actuated by a clockwork mechanism to rotate. The wheel contacts a brush 40 and puts an electro-magnet 41 situated beneath the vehicle into circuit. This electromagnet opens a valve 42 permitting paint in a tank 43 on the top of the wagon to run on to the track during the time the disc 39 takes to rotate.

Each time the valve 42 functions the small styles 52 and 53 (Figs. 2 and 5) move:

1. On the paper record 50 mentioned in the foregoing,

2. On a strip of paper 51 moving much more slowly (for example 1 centimetre per kilometre), thus giving on a very short strip of paper, all the points of a section where the warp has exceeded the tolerance limit.

The rapidly moving strip of paper 50 also comprises a record of the position of curves.

Finally, during recording, two strips of paper are obtained:

1. A strip 50 moving at 1 metre or 0.10 metre per kilometre giving:

a The warp of the track.

b The repetition of the projection of paint.

0 The curves in the track.

(Z The marking of the kilometres.

2. The other strip 51 moving at 1 centimetre per kilometre giving a The points where the warp exceeds the tolerance limit.

6 The marking of the kilometres.

It should be understood of course that the invention is not limited to the constructions shown, the latter being given merely by way of example.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is:

1. A device for recording the Warp of railway tracks comprising cables connecting diagonally the Wheels of :1 vehicle bogie, the variation in the vertical distance between these cables giving the Warp to be measured.

2. A device as claimed in claim 1, characterized by means for projecting paint operating autoi'natically as soon as the warp exceeds the tolerance limit, the quantity of paint projected remaining the same, irrespective of the magnitude of the warp.

In testimony whereof, I aflix my signature.

ANDRE ERNEST MAUZIN. 

